Problem:
Ms. Hamilton's eighth-grade class wants to participate in the annual three-person-team basketball tournament.
After Sally takes shots, she has made of her shots. After she takes more shots, she raises her percentage to . How many of the last shots did she make?
Answer Choices:
A.
B.
C.
D.
E.
Solution:
If Sally makes of her shots, she makes shots. If Sally makes of her shots, she makes shots. So she makes of the last shots.
Answer: .
The problems on this page are the property of the MAA's American Mathematics Competitions